The galvanostatic oxidation of aldehydes to acids on Ti/Ru0.3Ti0.7O2 electrodes using a filter-press cell

Autor(es)

Geoffroy R. P. Malpass ^[1] ; Artur J. Motheo ^[2]

Afiliação do(s) autor(es)

^[1] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil

^[2] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 14, n. 1, p. 65-70, 2003-01-00.

Resumo

Results for the galvanostatic oxidation of formaldehyde, acetaldehyde, propionaldehyde and n-butyraldehyde in 0.5 mol dm-3 H2SO4 at Ti/Ru0.3Ti0.7O2 DSA® type electrodes, using a filter-press cell, are presented. The observed products are the respective carboxylic acids and CO2. In the case of formaldehyde the additional presence of CO3(2-) is detected as a product. The carbon balance is observed to decrease with electrolysis time due to the partial liberation of the aldehyde in solution as a gas. The partial liberation of aldehyde gases increases with chain length and in this way the conversion of reactants to products decreases, as does the efficiency of the electro-oxidation process. (AU)

• Processo FAPESP: 99/07599-6 - Eletroxidação de aldeídos sobre ânodos do tipo dimensionalmente estáveis
• Beneficiário: Geoffroy Roger Pointer Malpass
• Modalidade de apoio: Bolsas no Brasil - Doutorado